Arizona Bill, great observation!! Just to add to the discussion here are pictures of my DS SN 472416 that is parkerized. I purchased it in hopes that it may have been a gun acquired by the US Gov't at the beginning of WW-2. It has the 'possible' crossed sabers, also. I have 'blown it up' as much as possible and even added 'white-out' into the numbers and the sabers.
Since this gun is >70,000 later, the die that was used may have been 'worn' quite a bit.
I have a request sent to Colt Historical for a letter. I will post that information when I receive it.